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wire 2026-05-09
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$ the-wire · showcase

oc-path drops YAML and YAGNI grammar as docs sync trails

By RepoJournal · Filed · About OpenClaw

Gio Della-Libera momothemage openclaw-docs-sync[bot] Peter Steinberger
4 people shipped this
Gio Della-Libera @giodl73-repo 5 cited momothemage @momothemage 2 cited openclaw-docs-sync[bot] @openclaw-docs-sync[bot] 1 cited Peter Steinberger @steipete

The substrate's path engine shed YAML support and several speculative grammar features, replacing a hand-rolled MD parser with markdown-it.

In openclaw/openclaw, the oc-path substrate has been aggressively simplified. YAML support is fully removed from the substrate: the YAML AST/parser/emitter/edit-resolve module, walker branches, CLI paths, and the `yaml` dependency are all gone. The substrate now supports md/jsonc/jsonl only. Since YAML editing was "the most complex per-kind module (~750 LoC) for the smallest surface area," this is a hard removal for any consumer that relied on substrate YAML editing directly [1].

The grammar was also cut down: quoted-segment escape sequences (`\"` and `\\`) are gone, quoted content is now byte-literal and refused if it contains `"` or `\`. CSS-style predicates were dropped as well, though details on other dropped features await the docs scrub [2]. In parallel, the hand-rolled MD parser was replaced with a markdown-it token-stream walker; AstTable and AstCodeBlock no longer exist in the AST, and grammar opinions like indented `## foo` (1-3 spaces) as a heading moved from the parser to lint [3].

These changes are mirrored live into openclaw/docs by a sync bot across several commits [4]. If your code imports the dropped YAML path-kind, quoted escapes, or table/fence AST nodes, expect breakage. Meanwhile, a docs scrub removes references to those dropped grammar features, so the documentation is converging on the new surface [5]. The walker consolidation that made this possible extracted a shared `dispatchSeg<T>` table; a broad comment cleanup accompanies it [6].

Beyond the substrate, clawhub now lets a skill be republished under a different owner, fixing the "Slug is already taken" error that blocked personal-to-org migration via the UI [7]. That migration path is being hardened across UI, CLI, API, stats, backups, and docs [8].

Action items

References

  1. [1] refactor(oc-path): drop YAML kind from substrate ↗ openclaw/openclaw
  2. [2] refactor(oc-path): drop YAGNI grammar features ↗ openclaw/openclaw
  3. [3] refactor(oc-path): markdown-it tokenizer + grammar relaxation ↗ openclaw/openclaw
  4. [4] chore(sync): mirror docs from openclaw/openclaw@2945948a5ee4843d5640724dd1265b6841e68eb8 ↗ openclaw/docs
  5. [5] docs(path): scrub references to dropped grammar features ↗ openclaw/openclaw
  6. [6] refactor(oc-path): consolidate dispatch and trim comment surface ↗ openclaw/openclaw
  7. [7] fix(skills): allow publishing a new version under a different owner (personal→org migration) ↗ openclaw/clawhub
  8. [8] fix: harden skill owner migration ↗ openclaw/clawhub
Topics: AI Agents AI / ML Full archive →

Quick answers

What shipped in OpenClaw on May 9, 2026?
The substrate's path engine shed YAML support and several speculative grammar features, replacing a hand-rolled MD parser with markdown-it. In total, 56 commits and 4 pull requests landed.
Who contributed to OpenClaw on May 9, 2026?
4 developers shipped this update, including Gio Della-Libera, openclaw-docs-sync[bot], Peter Steinberger, and momothemage.
What were the notable OpenClaw updates?
refactor(oc-path): drop YAML kind from substrate, refactor(oc-path): drop YAGNI grammar features, and refactor(oc-path): markdown-it tokenizer + grammar relaxation.
♥

$ log @openclaw --recent

Gesture update rollback guard fixed; Slack slackens redundant work 150 shipped Apple container inspect parsing hardened, QA scenarios move to YAML 108 shipped Copilot replay thinking blocks stripped, WhatsApp login persistence fixed 160 shipped Gateway mirrors commentary events, docs builder reusable for ClawHub 88 shipped

$ log --all # elsewhere on the wire

Meta React Native adds Stable API guards to renderer attributed string FastAPI & Pydantic Pydantic fixes Mypy plugin crash, tightens datetime constraints

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Rails Django Laravel Node.js Go Vercel Vue.js Kubernetes HashiCorp Arch Linux Linux Anthropic

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